The Designs of XOR Logic Gates based on Photonic Crystals
All-optical logic gate based on photonic crystal waveguides is a promising technique in future high-speed all-optical signal processing. In this paper, we propose a XOR logic gate based on two dimensional triangular lattice photonic crystals composed of cylindrical silicon rods in air. The main structure of the device is a line defect asymmetric Y branch waveguide. It is expected that there should be a phase shift between the two input beams. Hence, if an appropriate initial phase is introduced, the two input beams may interfere constructively or destructively to realize the logical functions. The simulation results show that the proposed all-optical photonic crystal waveguide structure could really function as XOR logic gates. The interference section length and width of photonic crystal waveguide structure are optimized for achieving the optimal performance for the proposed XOR logic gates. This device is potentially applicable for photonic integrated circuits.
logic gate all-optical signal processing photonic crystal photonic integrated circuit
Kun-Yi Lee Jhe-Min Lin Yi-Cheng Yang Yi-Bin Yang Jia-Sing Wu Yen-Juei Lin Wei-Yu Lee
Department of Electrical Engineering,China Institute of TechnologyNo.245,Academia Rd.,Sec.3,Nangang Department of Electrical Engineering,China Institute of Technology No.245,Academia Rd.,Sec.3,Nangang
国际会议
2008亚太光通信会议(Asia-Pacific Optical Communications 2008)
杭州
英文
2008-10-26（万方平台首次上网日期，不代表论文的发表时间）